Weeding Robot Team 11Sponsor: Jeff Phipps

Advisor: Dr. Clark

Student Members:Ian Nowak (EE)

Coen Purvis (ME) Amanda Richards (ME)

Grant Richter (ME)Jeremy Rybicki (EE/CpE)

Nathan Walden (ME)

Background Information• Purpose• To create an autonomous robotic system to remove weeds from a plot

• Orchard Pond Organic Farm• About the farm• About the sponsor

• Constraints• Affect all weeds in a given area • Should not disturb below 1 inch of soil

Team 11 Coen Purvis

Slide 2 of 9 Revised Project Plan & Objectives

Motivation

• For an organic farm to compete, it must make up for the excessive manpower required• Allow for the farm to expand• Weeding is a menial task that could be automated• Weeding can be physically taxing on an individual

New Project Scope• Plot will have beds and

furrows• Robot driving in furrow no

longer has a weight constraint• Remove weeds from bed

within 2 inches of the plant

• Semi-flat terrain with no beds or furrows

• Ground pressure and weight of the robot was a key factor

• Remove weeds in entire 36 inch gap between crops

Old Project Scope

Team 11 Nathan Walden

Slide 3 of 9 Revised Project Plan & Objectives

• Finished first prototype and confirmed proof of concept• Finished construction of second prototype• In progress of integrating weeding mechanism and the robot• Electronic design

Semester Progress

Video of First Prototype

Lessons Learned• More spokes• Better method of fastening spokes• Stronger materials• Influenced frame design of future

prototype

Current Mechanical Prototype

• Elevated weeding mechanism • Offset distance from robot• Chain driven

Team 11 Coen Purvis

Slide 4 of 9 Revised Project Plan & Objectives

Video Second Prototype

• Add video here.

Electrical Project Plan• Get visual system fully operational

• Combine the visual system with the motor control for navigation

• Testing navigation with the weeding mechanism

• Provide documentation

Team 11 Nathan Walden

Slide 8 of 9 Revised Project Plan & Objectives

Challenges

• Change of scope • Beagle Bone Black Blowout• Lengthy shipping times

Possible Future Design Modification

• Develop height adjusting mechanism• Adding baskets to both sides for navigation and stability• Adjustable basket sizes to improve marketability

Team 11 Grant Richter

Slide 5 of 9 Revised Project Plan & Objectives

Mechanical Project Plan• Fabricate second weeding mechanism, couple with frame

• Test weeding mechanism with the Frame

• Integrate future design modifications

• Provide documentation

Team 11 Nathan Walden

Slide 6 of 9 Revised Project Plan & Objectives

Budget

Team 11 Name

Slide 7 of 9 Midterm II Presentation

ACTUALELECTRICAL COMPONENTS COSTBeagleBone Black 55.00$ Logitech C310 USB 2.0 HD WebCam 40.46$ Dual Motor Controller Cape (DMCC) Mk.6 136.00$ PICAXE-08M2 Microcontroller 15.67$ SainSmart HC - Range Detector 8.42$ AC6 Smart LiPo Balance Charger/Discharger w/AC Adapter 48.95$ GENS ACE 5000mAh 40C 7.4V Lipo Battery Pack 86.00$ Converter Adapter 6.08$ HDMI to Micro HDMI 3.99$ Samsung Class 6 SDHC 15.51$ USB Hub 17.14$

MECHANICAL COMPONENTS COST4WD All-Terrain Chassis 187.40$

3000; 83%

620.62; 17%

ACTUALTOTAL BUDGETTOTAL EXPENSES

TOTAL 620.62$

Team 11 Nathan Walden

Slide 9 of 9 Revised Project Plan & Objectives